logo Calflora  Illustrated Plant List 
Santa Rita Road Corridor
Santa Rita Road from Templeton to Cayucos

San Luis Obispo County

David Keil  / CNPS-SLO  (2022-05-02)

Record Detail Nearby Surveys What Grows Here?
330 PLANTS
Acer macrophyllum    Big leaf maple,  Bigleaf maple
native
Tree

SAPINDACEAE

Acer macrophyllum
© 2016 Steve Matson
Acer macrophyllum
© 2018 Steve Matson
Acer macrophyllum
© 2018 Steve Matson

Acer negundo    Boxelder
native
Tree

SAPINDACEAE

Acer negundo
© 2019 Robert Sweet
Acer negundo
© 2016 John H Malpas
Acer negundo
© 2019 Ron Vanderhoff

Achillea millefolium    Common yarrow
native
Perennial herb

ASTERACEAE

Achillea millefolium
© 2022 Andy Ford
Achillea millefolium
© 2020 Bob Sweatt
Achillea millefolium
© 2018 Gary McDonald

Acmispon americanus var. americanus    American bird's foot trefoil,  American trefoil,  Spanish lotus
native
Annual herb

FABACEAE

Acmispon americanus var. americanus
© 2015 Steve Matson
Acmispon americanus var. americanus
© 2015 Steve Matson
Acmispon americanus var. americanus
© 2015 Steve Matson

native
Perennial herb

FABACEAE

Acmispon glaber var. glaber
© 2020 Ron Vanderhoff
Acmispon glaber var. glaber
© 2020 Ron Vanderhoff
Acmispon glaber var. glaber
© 2020 Ron Vanderhoff

Acmispon parviflorus    Hill lotus
native
Annual herb

FABACEAE

Acmispon parviflorus
© 2008 Steve Matson
Acmispon parviflorus
© 2022 Dana York
Acmispon parviflorus
© 2008 Steve Matson

Adelinia grandis    Hound's tongue,  Western houndstongue,  Adelinia
native
Perennial herb

BORAGINACEAE

Adelinia grandis
© 2022 David Strauch
Adelinia grandis
© 2007 Steve Matson
Adelinia grandis
© 2021 Dee Shea Himes

native
Tree, Shrub

ROSACEAE

Adenostoma fasciculatum
© 2019 Steve Matson
Adenostoma fasciculatum
© 2019 Steve Matson
Adenostoma fasciculatum
© 2019 Steve Matson

Adiantum jordanii    Adiantum,  maiden hair fern
native
Fern

PTERIDACEAE

Adiantum jordanii
© 2022 BOB CASE
Adiantum jordanii
© 2019 Ron Vanderhoff
Adiantum jordanii
© 2023 Mike Russler

Aesculus californica    Buckeye,  California buckeye,  California horse chestnut
native
Tree

SAPINDACEAE

Aesculus californica
© 2011 Steve Matson
Aesculus californica
© 2011 Steve Matson
Aesculus californica
© 2019 Verna Jigour

Agastache urticifolia    Horse mint,  Horsemint giant hyssop,  Nettle leaf giant hyssop
native
Perennial herb

LAMIACEAE

Agastache urticifolia
© 2020 Bob Sweatt
Agastache urticifolia
© 2010 Gerald Carr
Agastache urticifolia
© 2010 Gerald Carr

Agoseris grandiflora var. grandiflora    Giant mountain dandelion
native
Perennial herb

ASTERACEAE

Agoseris grandiflora var. grandiflora
© 2007 Gerald Carr
Agoseris grandiflora var. grandiflora
© 2007 Gerald Carr
Agoseris grandiflora var. grandiflora
© 2012 Michael Mitchell

Agoseris heterophylla var. cryptopleura    Mountain dandelion
native
Annual herb

ASTERACEAE

Agoseris heterophylla var. cryptopleura
© 2022 Mike Russler
Agoseris heterophylla var. cryptopleura
© 2024 Dianne Lake
Agoseris heterophylla var. cryptopleura
© 2022 Mike Russler

native
Annual herb

ASTERACEAE

Agoseris heterophylla var. heterophylla
© 2003 Steve Matson
Agoseris heterophylla var. heterophylla
© 2003 Steve Matson
Agoseris heterophylla var. heterophylla
© 2003 Steve Matson

Agoseris retrorsa    Spear leaved agoseris,  Spearleaf agoseris,  Spearleaf mountain dandelion
native
Perennial herb

ASTERACEAE

Agoseris retrorsa
© 2018 Steve Matson
Agoseris retrorsa
© 2018 Steve Matson
Agoseris retrorsa
© 2018 Steve Matson

Agrostis exarata    Spike bentgrass,  Spike redtop
native
Perennial grass

POACEAE

Agrostis exarata
© 2022 Teal Derrer
Agrostis exarata
© 2021 David popp
Agrostis exarata
© 2022 John Rawlings

Agrostis pallens    Leafy bent grass,  Diego bent grass,  Seashore bentgrass
native
Perennial grass

POACEAE

Agrostis pallens
© 2021 John Rawlings
Agrostis pallens
© 2020 Susan McDougall
Agrostis pallens
© 2021 John Rawlings

Aira caryophyllea    Shiver grass,  Silver hairgrass,  Silvery hairgrass
non-native
Annual grass

POACEAE

Aira caryophyllea
© 2005 Steve Matson
Aira caryophyllea
© 2005 Steve Matson
Aira caryophyllea
© 2005 Steve Matson

Allium unifolium    One leaf onion,  Oneleaf onion
native
Perennial herb (bulb)

ALLIACEAE

Allium unifolium
© 2021 Doug Allshouse
Allium unifolium
© 2020 stephen rosenthal
Allium unifolium
© 2023 Mary Ann Machi

Amaryllis belladonna    Belladonna lily
non-native
Perennial herb

AMARYLLIDACEAE

Amaryllis belladonna
© 2016 Camille Nowell
Amaryllis belladonna
© 2020 Jacob Martin
Amaryllis belladonna
© 2022 Ron Vanderhoff

Amsinckia intermedia    Common fiddleneck
native
Annual herb

BORAGINACEAE

Amsinckia intermedia
© 2020 Matt Berger
Amsinckia intermedia
© 2019 Ron Vanderhoff
Amsinckia intermedia
© 2021 David popp

Amsinckia menziesii    Menzies' fiddleneck,  Small flowered fiddleneck
native
Annual herb

BORAGINACEAE

Amsinckia menziesii
© 2020 Ron Vanderhoff
Amsinckia menziesii
© 2018 Gary McDonald
Amsinckia menziesii
© 2018 Gary McDonald

Anthemis cotula    Dog fennel,  Mayweed, dog fennel,  Stinking chamomile
non-native
Annual herb

ASTERACEAE

Anthemis cotula
© 2017 Diane Etchison
Anthemis cotula
© 2019 Nathan Taxel
Anthemis cotula
© 2019 Dave Beller

Anthriscus caucalis    Bur chervil
non-native
Annual herb, Vine

APIACEAE

Anthriscus caucalis
© 2021 Aaron Echols
Anthriscus caucalis
© 2024 Ron Vanderhoff
Anthriscus caucalis
© 2020 Jennifer Mo

native
Perennial herb

PLANTAGINACEAE

Antirrhinum thompsonii
© 2018 Michael Mitchell
Antirrhinum thompsonii
© Geoff Burleigh
Antirrhinum thompsonii
© 2024 Mary Conway

Apiastrum angustifolium    Mock parsley,  Wild celery,  Wild parsley
native
Annual herb

APIACEAE

Apiastrum angustifolium
© 2020 Ron Vanderhoff
Apiastrum angustifolium
© 2020 Ron Vanderhoff
Apiastrum angustifolium
© 2020 Ron Vanderhoff

Apocynum cannabinum    Indian hemp,  Indianhemp dogbane,  Hemp Dogbane
native
Perennial herb

APOCYNACEAE

Apocynum cannabinum
© 2019 Ron Vanderhoff
Apocynum cannabinum
© 2015 Ron Vanderhoff
Apocynum cannabinum
© 2021 Mike Russler

Aralia californica    California spikenard,  Elk's clover,  Elkclover
native
Perennial herb

ARALIACEAE

Aralia californica
© 2022 Julie A. Kierstead
Aralia californica
© 2020 Tri Do
Aralia californica
© 2014 James Gonsman

Arbutus menziesii    Madrono,  Pacific madrone
native
Tree

ERICACEAE

Arbutus menziesii
© 2021 Cynthia Powell
Arbutus menziesii
© 2021 R.A. Chasey
Arbutus menziesii
© 2021 Hunter Breck

Artemisia californica    California sagebrush,  Coast sagebrush,  Coastal sage brush
native
Shrub

ASTERACEAE

Artemisia californica
© 2018 James Gonsman
Artemisia californica
© 2019 Aaron Echols
Artemisia californica
© 2018 Ron Vanderhoff

Artemisia douglasiana    California mugwort,  Douglas' sagewort
native
Perennial herb

ASTERACEAE

Artemisia douglasiana
© 2022 Ron Vanderhoff
Artemisia douglasiana
© 2016 Glen Schneider
Artemisia douglasiana
© 2021 Mike Russler

Arundo donax    Giant reed
invasive non-native
Perennial grass

POACEAE

Arundo donax
© 2013 Miriam Sachs Martin
Arundo donax
© 2020 Jennifer Mo
Arundo donax
© 2018 Ron Vanderhoff

Asclepias eriocarpa    Indian milkweed,  Kotolo milkweed,  Woolypod milkweed
native
Perennial herb

APOCYNACEAE

Asclepias eriocarpa
© 2023 Ron Vanderhoff
Asclepias eriocarpa
© 2014 Dan Cohn
Asclepias eriocarpa
© 2019 Ron Vanderhoff

Asclepias fascicularis    Narrow leaf milkweed
native
Perennial herb

APOCYNACEAE

Asclepias fascicularis
© 2010 Steve Matson
Asclepias fascicularis
© 2010 Steve Matson
Asclepias fascicularis
© 2014 Steve Matson

Aspidotis californica    California lace fern,  California lacefern
native
Fern

PTERIDACEAE

Aspidotis californica
© 2020 R.A. Chasey
Aspidotis californica
© 2018 Hunter Breck
Aspidotis californica
© 2020 John Schmidt

Astragalus curtipes    Morro milkvetch,  San luis obispo milkvetch,  South coast milk vetch
native
Perennial herb

FABACEAE

Astragalus curtipes
© 2021 Joel A. Germond, Psy.D.
Astragalus curtipes
© 2020 David Greenberger
Astragalus curtipes
© 2020 David Greenberger

Avena barbata    Slender oat,  Slim oat
invasive non-native
Annual grass

POACEAE

Avena barbata
© 2018 Julian Geoghegan
Avena barbata
© 2023 David popp
Avena barbata
© 2019 Ron Vanderhoff

Avena fatua    Wild oat,  Wildoat
invasive non-native
Annual grass

POACEAE

Avena fatua
© 2018 Gary McDonald
Avena fatua
© 2023 Ron Vanderhoff
Avena fatua
© 2023 Matt Berger

Azolla filiculoides    American water fern, mosquito fern,  Mosquito fern,  Pacific mosquitofern
native
Fern

AZOLLACEAE

Azolla filiculoides
© 2020 Ron Vanderhoff
Azolla filiculoides
© 2023 R.A. Chasey
Azolla filiculoides
© 2021 Zoya Akulova-Barlow

Baccharis glutinosa    Douglas' baccharis,  Salt marsh baccharis
native
Perennial herb

ASTERACEAE

Baccharis glutinosa
© 2020 Patrick Furtado
Baccharis glutinosa
© 2019 Julian Geoghegan
Baccharis glutinosa
© 2020 Rebecca Schoenenberger

native
Shrub

ASTERACEAE

Baccharis pilularis var. consanguinea
© 2009 Toni Corelli
Baccharis pilularis var. consanguinea
© 2022 John Doyen
Baccharis pilularis var. consanguinea
© 2018 Ron Vanderhoff

Barbarea orthoceras    American rocket,  American wintercress,  Erectpod wintercress
native
Perennial herb

BRASSICACEAE

Barbarea orthoceras
© 2015 James Gonsman
Barbarea orthoceras
© 2019 Diane Etchison
Barbarea orthoceras
© 2020 Diane Etchison

Bloomeria crocea var. crocea    Common goldenstar
native
Perennial herb

THEMIDACEAE

Bloomeria crocea var. crocea
© 2019 Michael Mitchell
Bloomeria crocea var. crocea
© 2019 Ron Vanderhoff
Bloomeria crocea var. crocea
© 2017 Aaron Echols

Brachypodium hybridum   


Brassica nigra    Black mustard
invasive non-native
Annual herb

BRASSICACEAE

Brassica nigra
© 2021 Ron Vanderhoff
Brassica nigra
© 2019 Ron Vanderhoff
Brassica nigra
© 2019 Ron Vanderhoff

Brickellia californica    Brickell bush,  California brickellbush,  California brickellia
native
Perennial herb

ASTERACEAE

Brickellia californica
© 2022 Steve Matson
Brickellia californica
© 2022 Steve Matson
Brickellia californica
© 2022 Steve Matson

Briza maxima    Big quaking grass,  Big quakinggrass,  Rattlesnake grass
invasive non-native
Annual grass

POACEAE

Briza maxima
© 2017 Gary McDonald
Briza maxima
© 2018 Bill Schmidt
Briza maxima
© 2017 Gary McDonald

Bromus diandrus    Bromegrass,  Ripgut brome,  Ripgut grass
invasive non-native
Annual grass

POACEAE

Bromus diandrus
© Alize
Bromus diandrus
© 2021 Richard Spjut
Bromus diandrus
© 2024 David popp

Bromus hordeaceus    Soft brome,  Soft chess
invasive non-native
Annual grass

POACEAE

Bromus hordeaceus
© 2023 Ron Vanderhoff
Bromus hordeaceus
© 2018 Gary McDonald
Bromus hordeaceus
© 2018 Gary McDonald

Bromus laevipes    Chinook brome,  Narrow flowered brome,  Woodland brome
native
Perennial grass

POACEAE

Bromus laevipes
© 2020 Alice Cummings
Bromus laevipes
© 2019 Kimberly Moses
Bromus laevipes
© 2018 Ken Hickman

Bromus madritensis    Foxtail chess, foxtail brome,  Madrid brome,  Spanish brome
non-native
Annual grass

POACEAE

Bromus madritensis
© 2022 Steve Matson
Bromus madritensis
© 2023 Stephen H Siemsen
Bromus madritensis
© 2015 Chris Jaster

Bromus sitchensis var. carinatus    California brome
native
Perennial grass

POACEAE

Bromus sitchensis var. carinatus
© 2020 Ron Vanderhoff
Bromus sitchensis var. carinatus
© 2022 David popp
Bromus sitchensis var. carinatus
© 2014 Vertin Alvarez

Calochortus albus    White fairy lantern,  White globe lily
native
Perennial herb

LILIACEAE

Calochortus albus
© 2019 David Greenberger
Calochortus albus
© 2019 Cynthia Powell
Calochortus albus
© 2016 Steve Matson

Calochortus clavatus var. clavatus    Club haired mariposa lily,  Clubhair mariposa lily
rare native
Perennial herb (bulb)

LILIACEAE

Calochortus clavatus var. clavatus
© 2020 David Wolfson
Calochortus clavatus var. clavatus
© 2020 David Krause
Calochortus clavatus var. clavatus
© 2023 Mike Russler

Calochortus splendens    Splendid mariposa lily
native
Perennial herb

LILIACEAE

Calochortus splendens
© 2019 Gordon Jenkins
Calochortus splendens
© 2024 Ken-ichi Ueda
Calochortus splendens
© 2022 Mike Russler

Calystegia macrostegia ssp. cyclostegia    Coast morning glory,  Island false bindweed
native
Perennial herb, Vine

CONVOLVULACEAE

Calystegia macrostegia ssp. cyclostegia
© 2017 Michael Mitchell
Calystegia macrostegia ssp. cyclostegia
© 2020 James Gonsman
Calystegia macrostegia ssp. cyclostegia
© 2017 Michael Mitchell

Cardamine californica    California toothwort,  milkmaids
native
Perennial herb

BRASSICACEAE

Cardamine californica
© 2020 Barbara Peck
Cardamine californica
© 2019 Ron Vanderhoff
Cardamine californica
© 2019 Ron Vanderhoff

Cardamine oligosperma    Bitter cress,  Idaho bittercress
native
Annual, Perennial herb

BRASSICACEAE

Cardamine oligosperma
© 2008 Steve Matson
Cardamine oligosperma
© 2008 Steve Matson
Cardamine oligosperma
© 2008 Steve Matson

non-native
Annual herb

ASTERACEAE

Carduus pycnocephalus ssp. pycnocephalus
© 2020 Ron Vanderhoff
Carduus pycnocephalus ssp. pycnocephalus
© 2019 Gary McDonald
Carduus pycnocephalus ssp. pycnocephalus
© 2021 Ron Vanderhoff

Carex globosa    Round fruit sedge
native
Perennial grasslike herb

CYPERACEAE

Carex globosa
© 2014 Steve Matson
Carex globosa
© 2014 Steve Matson
Carex globosa
© 2014 Steve Matson

Carex nudata    Dudley's sedge,  Naked sedge,  Torrent sedge
native
Perennial grasslike herb

CYPERACEAE

Carex nudata
© 2022 R.A. Chasey
Carex nudata
© 2016 David Greenberger
Carex nudata
© 2014 John Malpas

Carex spissa    San diego sedge
native
Perennial grasslike herb

CYPERACEAE

Carex spissa
© 2016 Steve Matson
Carex spissa
© 2016 Steve Matson
Carex spissa
© 2016 Steve Matson

Carex subbracteata    Small bract sedge
native
Perennial grasslike herb

CYPERACEAE

Carex subbracteata
© 2023 Dana York
Carex subbracteata
© 2021 John Rawlings
Carex subbracteata
© 2023 Ellen Uhler

Castilleja affinis var. affinis    Coast indian paintbrush
native
Perennial herb

OROBANCHACEAE

Castilleja affinis var. affinis
© 2006 Steve Matson
Castilleja affinis var. affinis
© 2006 Steve Matson
Castilleja affinis var. affinis
© 2019 Ron Vanderhoff

Ceanothus cuneatus var. cuneatus    Buck brush,  Buckbrush
native
Shrub

RHAMNACEAE

Ceanothus cuneatus var. cuneatus
© 2022 Ryan O'Dell
Ceanothus cuneatus var. cuneatus
© 2021 Steve Matson
Ceanothus cuneatus var. cuneatus
© 2019 Cara Wilcox

Ceanothus foliosus var. medius    La cuesta ceanothus,  Wavyleaf buckbrush
native
Shrub

RHAMNACEAE

Ceanothus foliosus var. medius
© 2018 Michael Mitchell
Ceanothus foliosus var. medius
© 2005 Dieter Wilken

native
Shrub

RHAMNACEAE

Ceanothus oliganthus var. sorediatus
© 2022 R.A. Chasey
Ceanothus oliganthus var. sorediatus
© 2017 Steve Matson
Ceanothus oliganthus var. sorediatus
© 2019 Susan McDougall

Ceanothus papillosus    warty-leaf ceanothus,  Wartleaf ceanothus
native
Shrub

RHAMNACEAE

Ceanothus papillosus
© 2022 Justin Luong
Ceanothus papillosus
© 2024 Mary Gerbic
Ceanothus papillosus
© 2021 Mary Conway

Cerastium glomeratum    Large mouse ears,  Mouseear chickweed,  Sticky chickweed
non-native
Annual herb

CARYOPHYLLACEAE

Cerastium glomeratum
© 2024 Dana York
Cerastium glomeratum
© 2023 Ron Vanderhoff
Cerastium glomeratum
© 2023 R.A. Chasey

Cercocarpus betuloides var. betuloides    Birch leaf mountain mahogany
native
Tree, Shrub

ROSACEAE

Cercocarpus betuloides var. betuloides
© 2019 Ron Vanderhoff
Cercocarpus betuloides var. betuloides
© 2019 Ron Vanderhoff
Cercocarpus betuloides var. betuloides
© 2016 Ron Vanderhoff

Chlorogalum pomeridianum var. pomeridianum    Common soaproot,  Wavyleaf soap plant
native
Perennial herb

AGAVACEAE

Chlorogalum pomeridianum var. pomeridianum
© 2021 Sue Graue
Chlorogalum pomeridianum var. pomeridianum
© 2015 Sharon King & Randy Aeschliman
Chlorogalum pomeridianum var. pomeridianum
© 2023 Ron Vanderhoff

Cicuta maculata var. angustifolia    Narrow leafed water hemlock,  Spotted water hemlock
native
Perennial herb

APIACEAE

Cicuta maculata var. angustifolia
© 2013 Steve Matson
Cicuta maculata var. angustifolia
© 2013 Steve Matson
Cicuta maculata var. angustifolia
© 2013 Steve Matson

Cirsium brevistylum    Clustered thistle,  Indian thistle
native
Perennial herb

ASTERACEAE

Cirsium brevistylum
© 2019 Steve Davison
Cirsium brevistylum
© 2018 Brian Charles
Cirsium brevistylum
© 2019 Aleksandra Evert

Cirsium vulgare    Bull thistle
invasive non-native
Perennial herb

ASTERACEAE

Cirsium vulgare
© 2017 James Bailey
Cirsium vulgare
© 2020 Bob Sweatt
Cirsium vulgare
© 2020 Bob Sweatt

Clarkia bottae    Botta's clarkia,  Punch bowl godetia
native
Annual herb

ONAGRACEAE

Clarkia bottae
© 2023 Ron Vanderhoff
Clarkia bottae
© 2020 Steve Laymon
Clarkia bottae
© 2020 Steve Laymon

Clarkia purpurea ssp. quadrivulnera    Four-spot,  Purple clarkia,  Purple godetia
native
Annual herb

ONAGRACEAE

Clarkia purpurea ssp. quadrivulnera
© 2014 Steve Matson
Clarkia purpurea ssp. quadrivulnera
© 2016 Steve Matson
Clarkia purpurea ssp. quadrivulnera
© 2016 Steve Matson

Clarkia unguiculata    Elegant clarkia,  Mountain garland,  Woodland clarkia
native
Annual herb

ONAGRACEAE

Clarkia unguiculata
© 2019 David Greenberger
Clarkia unguiculata
© 2019 Bryant Baker
Clarkia unguiculata
© 2021 Mike Russler

Claytonia gypsophiloides    Gypsum spring beauty,  Gypsum springbeauty
native
Annual herb

MONTIACEAE

Claytonia gypsophiloides
© 2021 Miao Ling He
Claytonia gypsophiloides
© 2019 William Lundgren
Claytonia gypsophiloides
© 2023 R.A. Chasey

Claytonia parviflora ssp. parviflora    Narrow leaved miner's lettuce,  Streambank springbeauty,  Utah miner s lettuce
native
Annual herb

MONTIACEAE

Claytonia parviflora ssp. parviflora
© 2022 Ron Vanderhoff
Claytonia parviflora ssp. parviflora
© 2017 Gary McDonald
Claytonia parviflora ssp. parviflora
© 2017 Gary McDonald

Claytonia perfoliata ssp. perfoliata    Claytonia,  Miner's lettuce
native
Annual herb

MONTIACEAE

Claytonia perfoliata ssp. perfoliata
© 2008 Steve Matson
Claytonia perfoliata ssp. perfoliata
© 2008 Steve Matson
Claytonia perfoliata ssp. perfoliata
© 2008 Steve Matson

Clematis lasiantha    Chaparral clematis,  Pipestem
native
Perennial herb, Vine

RANUNCULACEAE

Clematis lasiantha
© 2008 Steve Matson
Clematis lasiantha
© 2018 Steve Matson
Clematis lasiantha
© 2024 Dana York

Clematis ligusticifolia    Creek clematis,  Western white clematis,  Yerba de chiva
native
Perennial herb, Vine

RANUNCULACEAE

Clematis ligusticifolia
© 2018 Diane Etchison
Clematis ligusticifolia
© 2012 Steve Matson
Clematis ligusticifolia
© 2012 Steve Matson

Clinopodium douglasii    Yerba buena
native
Perennial herb

LAMIACEAE

Clinopodium douglasii
© 2019 Gary McDonald
Clinopodium douglasii
© 2012 Gary McDonald
Clinopodium douglasii
© 2012 Gary McDonald

Collinsia heterophylla var. heterophylla    Purple chinese houses,  Chinese-Houses
native
Annual herb

PLANTAGINACEAE

Collinsia heterophylla var. heterophylla
© 2022 R.A. Chasey
Collinsia heterophylla var. heterophylla
© 2019 Jacob Smith
Collinsia heterophylla var. heterophylla
© 2023 R.A. Chasey

Collinsia sparsiflora var. collina    Hillside collinsia
native
Annual herb

PLANTAGINACEAE

Collinsia sparsiflora var. collina
© 2021 Steve Matson
Collinsia sparsiflora var. collina
© 2021 Steve Matson
Collinsia sparsiflora var. collina
© 2015 Steve Matson

Collomia heterophylla    Variableleaf collomia,  Varied leaved collomia
native
Annual herb

POLEMONIACEAE

Collomia heterophylla
© 2023 Steve Conger
Collomia heterophylla
© 2017 Steve Matson
Collomia heterophylla
© 2024 Steve Conger

Conium maculatum    Poison hemlock
invasive non-native
Perennial herb

APIACEAE

Conium maculatum
© 2024 Cynthia Powell
Conium maculatum
© 2013 Toni Corelli
Conium maculatum
© 2016 Cynthia Powell

Cordylanthus rigidus ssp. rigidus    Rigid bird's beak,  Stiffbranch bird's beak
native
Annual herb (hemiparasitic)

OROBANCHACEAE

Cordylanthus rigidus ssp. rigidus
© 2021 Mike Russler
Cordylanthus rigidus ssp. rigidus
© 2021 Mike Russler
Cordylanthus rigidus ssp. rigidus
© 2021 Mike Russler

Corethrogyne filaginifolia    Common sandaster
native
Perennial herb

ASTERACEAE

Corethrogyne filaginifolia
© 2022 Mike Russler
Corethrogyne filaginifolia
© 2018 Ron Vanderhoff
Corethrogyne filaginifolia
© 2019 Diane Etchison

Cornus glabrata    Brown dogwood
native
Tree, Shrub

CORNACEAE

Cornus glabrata
© 2021 Donald Burk
Cornus glabrata
© 2021 Barbara Peck
Cornus glabrata
© 2021 John Rawlings

Cornus sericea ssp. occidentalis    Western dogwood
native
Shrub

CORNACEAE

Cornus sericea ssp. occidentalis
© 2019 David Greenberger
Cornus sericea ssp. occidentalis
© 2018 Lynn Overtree
Cornus sericea ssp. occidentalis
© 2020 Susan McDougall

Cuscuta subinclusa    Canyon dodder
native
Annual herb, Vine (parasitic)

CONVOLVULACEAE

Cuscuta subinclusa
© 2018 Ron Vanderhoff
Cuscuta subinclusa
© 2020 Ron Vanderhoff
Cuscuta subinclusa
© 2018 Ron Vanderhoff

Cynosurus echinatus    Annual dogtail,  Bristly dogstail grass,  Dogtail grass
invasive non-native
Annual grass

POACEAE

Cynosurus echinatus
© 2024 R.A. Chasey
Cynosurus echinatus
© 2010 Julie A. Kierstead
Cynosurus echinatus
© 2022 Ron Vanderhoff

Cystopteris fragilis    Bladder fern,  Brittle bladder fern,  Brittle fern
native
Fern

CYSTOPTERIDACEAE

Cystopteris fragilis
© 2020 Bob Sweatt
Cystopteris fragilis
© 2021 Mike Russler
Cystopteris fragilis
© 2023 Ken-ichi Ueda

Dactylis glomerata    Orchard grass,  Orchardgrass
invasive non-native
Perennial grass

POACEAE

Dactylis glomerata
© 2003 Steve Matson
Dactylis glomerata
© 2003 Steve Matson
Dactylis glomerata
© 2003 Steve Matson

Datisca glomerata    Durango root
native
Perennial herb

DATISCACEAE

Datisca glomerata
© 2019 Ron Vanderhoff
Datisca glomerata
© 2019 Diane Etchison
Datisca glomerata
© 2019 Matt Berger

Daucus pusillus    American wild carrot,  Rattlesnake weed
native
Annual herb

APIACEAE

Daucus pusillus
© 2019 Diane Etchison
Daucus pusillus
© 2022 David Wolfson
Daucus pusillus
© 2021 Ken Lunders

Deinandra fasciculata    Clustered tarweed
native
Annual herb

ASTERACEAE

Deinandra fasciculata
© 2017 Steve Matson
Deinandra fasciculata
© 2017 Steve Matson
Deinandra fasciculata
© 2017 Steve Matson

Delphinium nudicaule    Canyon larkspur,  Red or Orange Larkspur,  Red larkspur
native
Perennial herb

RANUNCULACEAE

Delphinium nudicaule
© 2006 Steve Matson
Delphinium nudicaule
© 2006 Steve Matson
Delphinium nudicaule
© 2024 Mary Ann Machi

Delphinium parryi ssp. parryi    Parry's larkspur,  San bernardino larkspur
native
Perennial herb

RANUNCULACEAE

Delphinium parryi ssp. parryi
© 2022 Mike Russler
Delphinium parryi ssp. parryi
© 2021 R.A. Chasey
Delphinium parryi ssp. parryi
© 2013 James Gonsman

Deschampsia elongata    Hairgrass,  Slender hairgrass
native
Perennial grass

POACEAE

Deschampsia elongata
© 2021 John Rawlings
Deschampsia elongata
© 2021 John Rawlings
Deschampsia elongata
© 2023 Robert Steers

Diplacus aurantiacus var. aurantiacus    Orange Bush Monkeyflower
native
Shrub

PHRYMACEAE

Diplacus aurantiacus var. aurantiacus
© 2024 Steve Conger
Diplacus aurantiacus var. aurantiacus
© 2024 Steve Conger
Diplacus aurantiacus var. aurantiacus
© 2019 Gary McDonald

native
Perennial herb

THEMIDACEAE

Dipterostemon capitatus ssp. Capitatus
© 2008 Steve Matson
Dipterostemon capitatus ssp. Capitatus
© 2016 Steve Matson
Dipterostemon capitatus ssp. Capitatus
© 2016 Steve Matson

native
Perennial herb

ROSACEAE

Drymocallis glandulosa var. wrangelliana
© 2020 Mary Conway
Drymocallis glandulosa var. wrangelliana
© 2017 Gary McDonald
Drymocallis glandulosa var. wrangelliana
© 2017 Gary McDonald

Dryopteris arguta    California wood fern,  Coastal wood fern,  Shield fern
native
Fern

DRYOPTERIDACEAE

Dryopteris arguta
© 2023 Julia Markey
Dryopteris arguta
© 2019 Rebecca Crowe
Dryopteris arguta
© 2018 James Gonsman

Dudleya abramsii ssp. bettinae    San Luis Obispo serpentine dudleya
rare native
Perennial herb

CRASSULACEAE

Dudleya abramsii ssp. bettinae
© 2012 Terrence Gosliner
Dudleya abramsii ssp. bettinae
© 2023 Kyle Suchy
Dudleya abramsii ssp. bettinae
© 2011 Chris Winchell

Dudleya lanceolata    Lanceleaf liveforever,  Southern california dudleya
native
Perennial herb

CRASSULACEAE

Dudleya lanceolata
© 2019 Ron Vanderhoff
Dudleya lanceolata
© 2020 Steven M Norris
Dudleya lanceolata
© 2020 Steven M Norris

Eleocharis macrostachya    Common spikerush,  Creeping spike rush,  Pale spikerush
native
Perennial grasslike herb

CYPERACEAE

Eleocharis macrostachya
© 2023 Ron Vanderhoff
Eleocharis macrostachya
© 2023 Ron Vanderhoff
Eleocharis macrostachya
© 2003 Steve Matson

Eleocharis parishii    Parish's spike rush,  Parish's spikerush
native
Perennial grasslike herb

CYPERACEAE

Eleocharis parishii
© 2014 Steve Matson
Eleocharis parishii
© 2014 Steve Matson
Eleocharis parishii
© 2018 Rachelle Gray

Elymus condensatus    Giant wild rye
native
Perennial grass

POACEAE

Elymus condensatus
© 2020 Ron Vanderhoff
Elymus condensatus
© 2024 Mel Letterman
Elymus condensatus
© 2020 Diane Etchison

Elymus glaucus ssp. virescens    Blue wildrye,  Virginia wildrye
native
Perennial grass

POACEAE

Elymus glaucus ssp. virescens
© 2023 John Rawlings
Elymus glaucus ssp. virescens
© 2012 Toni Corelli
Elymus glaucus ssp. virescens
© 2023 John Rawlings

Elymus multisetus    Big squirreltail grass
native
Perennial grass

POACEAE

Elymus multisetus
© 2019 Ron Vanderhoff
Elymus multisetus
© 2023 Helen Hancock
Elymus multisetus
© 2021 Denise Defreese

Emmenanthe penduliflora var. penduliflora    Whispering bells,  Whisperingbells
native
Annual herb

HYDROPHYLLACEAE

Emmenanthe penduliflora var. penduliflora
© 2014 Steve Matson
Emmenanthe penduliflora var. penduliflora
© 2014 Steve Matson
Emmenanthe penduliflora var. penduliflora
© 2010 Steve Matson

Epilobium brachycarpum    Annual fireweed,  Autumn willowweed,  Panicled willow herb
native
Annual herb

ONAGRACEAE

Epilobium brachycarpum
© 2023 Mary Ann Machi
Epilobium brachycarpum
© 2019 Ramona Robison
Epilobium brachycarpum
© 2020 Ron Vanderhoff

Epilobium canum ssp. canum    California fuchsia,  Hummingbird trumpet
native
Perennial herb

ONAGRACEAE

Epilobium canum ssp. canum
© 2023 Ron Vanderhoff
Epilobium canum ssp. canum
© 2024 R.A. Chasey
Epilobium canum ssp. canum
© 2022 Ron Vanderhoff

Epilobium ciliatum ssp. watsonii    Fringed willowherb,  Watson's willowherb,  Willow herb
native
Perennial herb

ONAGRACEAE

Epilobium ciliatum ssp. watsonii
© 2017 David Greenberger
Epilobium ciliatum ssp. watsonii
© 2012 BOB CASE
Epilobium ciliatum ssp. watsonii
© 2021 Jamie Spielmann

Epipactis gigantea    Giant helleborine,  Chatterbox orchid,  Stream orchid
native
Perennial herb

ORCHIDACEAE

Epipactis gigantea
© 2024 Mary Ann Machi
Epipactis gigantea
© 2020 Ron Vanderhoff
Epipactis gigantea
© 2018 Anna Sereno

Equisetum hyemale ssp. affine    Giant scouring rush
native
Fern

EQUISETACEAE

Equisetum hyemale ssp. affine
© 2013 Michael Mitchell
Equisetum hyemale ssp. affine
© 2024 Ron Vanderhoff
Equisetum hyemale ssp. affine
© 2024 Robert Steers

Equisetum telmateia ssp. braunii    Giant horse tail,  Giant horsetail
native
Fern

EQUISETACEAE

Equisetum telmateia ssp. braunii
© 2016 Steve Matson
Equisetum telmateia ssp. braunii
© 2016 Steve Matson
Equisetum telmateia ssp. braunii
© 2022 Suzanne L. Weakley

Erigeron foliosus var. foliosus    Leafy fleabane,  Thread stemmed fleabane
native
Perennial herb, Shrub

ASTERACEAE

Erigeron foliosus var. foliosus
© 2023 Ron Vanderhoff
Erigeron foliosus var. foliosus
© 2024 Mike Russler
Erigeron foliosus var. foliosus
© 2022 Ron Vanderhoff

Erigeron philadelphicus var. philadelphicus    Philadelphia fleabane
native
Perennial herb

ASTERACEAE

Erigeron philadelphicus var. philadelphicus
© 2021 R.A. Chasey
Erigeron philadelphicus var. philadelphicus
© 2022 Dana York
Erigeron philadelphicus var. philadelphicus
© 2021 R.A. Chasey

Eriogonum elongatum var. elongatum    Long stemmed buckwheat
native
Perennial herb

POLYGONACEAE

Eriogonum elongatum var. elongatum
© 2017 Ron Vanderhoff
Eriogonum elongatum var. elongatum
© 2019 Aaron Echols
Eriogonum elongatum var. elongatum
© 2021 Mike Russler

Eriogonum fasciculatum var. fasciculatum    California buckwheat,  Eastern mojave buckwheat
native
Shrub

POLYGONACEAE

Eriogonum fasciculatum var. fasciculatum
© 2019 Ron Vanderhoff
Eriogonum fasciculatum var. fasciculatum
© 2019 Ron Vanderhoff
Eriogonum fasciculatum var. fasciculatum
© 2019 Ron Vanderhoff

Eriogonum nudum var. pubiflorum    Hairy flowered buckwheat,  Naked buckwheat,  Fremont's Wild Buckwheat
native
Annual herb

POLYGONACEAE

Eriogonum nudum var. pubiflorum
© 2024 Mike Russler
Eriogonum nudum var. pubiflorum
© 2011 Steve Matson
Eriogonum nudum var. pubiflorum
© 2011 Steve Matson

Eriogonum parvifolium    Dune eriogonum,  Sea cliff buckwheat,  Seacliff buckwheat
native
Shrub

POLYGONACEAE

Eriogonum parvifolium
© 2022 Mary Conway
Eriogonum parvifolium
© 2020 Ron Vanderhoff
Eriogonum parvifolium
© 2021 Ron Vanderhoff

Eriophyllum confertiflorum var. confertiflorum    Golden yarrow,  Yellow yarrow
native
Shrub

ASTERACEAE

Eriophyllum confertiflorum var. confertiflorum
© 2023 Ryan O'Dell
Eriophyllum confertiflorum var. confertiflorum
© 2013 James Gonsman
Eriophyllum confertiflorum var. confertiflorum
© 2020 Ron Vanderhoff

Erodium cicutarium    Coastal heron's bill,  Red stemmed filaree,  Redstem stork's bill
invasive non-native
Annual herb

GERANIACEAE

Erodium cicutarium
© 2022 Steve Matson
Erodium cicutarium
© 2008 Steve Matson
Erodium cicutarium
© 2022 Steve Matson

Eschscholzia caespitosa    Foothill poppy,  Tufted eschscholzia,  Tufted poppy
native
Annual herb

PAPAVERACEAE

Eschscholzia caespitosa
© 2019 Ron Vanderhoff
Eschscholzia caespitosa
© 2024 Dana York
Eschscholzia caespitosa
© 2024 Dana York

Eschscholzia californica    California poppy
native
Annual, Perennial herb

PAPAVERACEAE

Eschscholzia californica
© 2019 Dee Shea Himes
Eschscholzia californica
© 2021 Ron Vanderhoff
Eschscholzia californica
© 2019 Amy Rapport

Eucalyptus globulus    Blue gum,  Tasmanian bluegum
invasive non-native
Tree

MYRTACEAE

Eucalyptus globulus
© 2022 Ron Vanderhoff
Eucalyptus globulus
© 2022 Ron Vanderhoff
Eucalyptus globulus
© 2022 Ron Vanderhoff

Euphorbia crenulata    Chinese caps,  Chinesecaps
native
Annual, Perennial herb

EUPHORBIACEAE

Euphorbia crenulata
© 2008 Steve Matson
Euphorbia crenulata
© 2008 Steve Matson
Euphorbia crenulata
© 2008 Steve Matson

Euphorbia spathulata    Reticulate seeded spurge,  Warty spurge
native
Annual herb

EUPHORBIACEAE

Euphorbia spathulata
© 2008 Steve Matson
Euphorbia spathulata
© 2014 Steve Matson
Euphorbia spathulata
© 2014 Steve Matson

Eurybia radulina    Roughleaf aster
native
Perennial herb

ASTERACEAE

Eurybia radulina
© 2007 Keir Morse
Eurybia radulina
© 2023 Ken-ichi Ueda
Eurybia radulina
© 2022 Bob Sweatt

Euthamia occidentalis    Western flat topped goldenrod,  Western goldenrod,  Western goldentop
native
Perennial herb

ASTERACEAE

Euthamia occidentalis
© 2021 Steve Matson
Euthamia occidentalis
© 2018 Ron Vanderhoff
Euthamia occidentalis
© 2021 R.A. Chasey

Festuca bromoides    Brome fescue
non-native
Annual grass

POACEAE

Festuca bromoides
© 2022 Diana Wahl
Festuca bromoides
© 2021 Toni Corelli
Festuca bromoides
© 2021 David popp

Festuca californica    California fescue
native
Perennial grass

POACEAE

Festuca californica
© 2019 Justin Luong
Festuca californica
© 2022 Justin Luong
Festuca californica
© 2021 Veronica Yates

Festuca microstachys    Small fescue
native
Annual grass

POACEAE

Festuca microstachys
© 2011 Steve Matson
Festuca microstachys
© 2024 Emily R. Allen
Festuca microstachys
© 2011 Steve Matson

Festuca myuros    Rattail sixweeks grass
invasive non-native
Annual grass

POACEAE

Festuca myuros
© 2021 Aaron Echols
Festuca myuros
© 2021 Ron Vanderhoff
Festuca myuros
© 2022 John Rawlings

Foeniculum vulgare    Biscuit root,  Sweet fennel
invasive non-native
Perennial herb

APIACEAE

Foeniculum vulgare
© 2019 Nicole Leatherman
Foeniculum vulgare
© 2019 Ron Vanderhoff
Foeniculum vulgare
© 2018 Henry DiRocco

Fragaria vesca    California strawberry,  Wild strawberry,  Wood strawberry
native
Perennial herb

ROSACEAE

Fragaria vesca
© 2024 Dana York
Fragaria vesca
© 2020 Cara Wilcox
Fragaria vesca
© 2023 R.A. Chasey

Frangula californica ssp. californica    California coffeeberry
native
Shrub

RHAMNACEAE

Frangula californica ssp. californica
© 2015 Steve Matson
Frangula californica ssp. californica
© 2015 Steve Matson
Frangula californica ssp. californica
© 2019 Ron Vanderhoff

Fritillaria affinis    Checker lily,  Mission bells
native
Perennial herb (bulb)

LILIACEAE

Fritillaria affinis
© 2008 Steve Matson
Fritillaria affinis
© 2008 Steve Matson
Fritillaria affinis
© 2008 Steve Matson

Galium andrewsii    Needlemat galium,  Phlox leaved bedstraw,  Phloxleaf bedstraw
native
Perennial herb

RUBIACEAE

Galium andrewsii
© 2022 Mike Russler
Galium andrewsii
© 2019 Marisa Persaud
Galium andrewsii
© 2022 Mike Russler

Galium aparine    Cleavers,  Common bedstraw,  Goose grass
native
Annual herb

RUBIACEAE

Galium aparine
© 2020 Ron Vanderhoff
Galium aparine
© 2023 Julia Markey
Galium aparine
© 2020 Ron Vanderhoff

Galium parisiense    Wall bedstraw
non-native
Annual herb

RUBIACEAE

Galium parisiense
© 2021 Al Keuter
Galium parisiense
© 2020 Ron Vanderhoff
Galium parisiense
© 2019 Diane Etchison

Galium porrigens var. porrigens    Climbing bedstraw,  Graceful bedstraw,  Oval leaved bedstraw
native
Vine, Shrub

RUBIACEAE

Galium porrigens var. porrigens
© 2022 Ron Vanderhoff
Galium porrigens var. porrigens
© 2022 Ron Vanderhoff
Galium porrigens var. porrigens
© 2022 Julia Larke

Garrya elliptica    Coast silk tassel,  Coast silktassel,  Silk tassel bush or quinine bush
native
Tree, Shrub

GARRYACEAE

Garrya elliptica
© 2004 Michael Charters
Garrya elliptica
© 2020 John Rawlings
Garrya elliptica
© 2020 Eliezer Margolis

Geranium dissectum    Cranesbill,  Cut leaved geranium,  Cutleaf geranium
invasive non-native
Annual herb

GERANIACEAE

Geranium dissectum
© 2021 Al Keuter
Geranium dissectum
© 2023 Ron Vanderhoff
Geranium dissectum
© 2014 Bryan Derr

Geranium molle    Crane's bill geranium,  Dove's foot geranium,  Dovefoot geranium
non-native
Annual, Perennial herb

GERANIACEAE

Geranium molle
© 2008 Steve Matson
Geranium molle
© 2008 Steve Matson
Geranium molle
© 2008 Steve Matson

Gilia capitata    Blue field gilia,  Bluehead gilia
native
Annual herb

POLEMONIACEAE

Gilia capitata
© 2011 Gerald Carr
Gilia capitata
© 2022 Ron Vanderhoff
Gilia capitata
© 2011 Gerald Carr

Gilia clivorum    Many stemmed gilia,  Purple spot gilia,  Purplespot gilia
native
Annual herb

POLEMONIACEAE

Gilia clivorum
© 2013 Gary McDonald
Gilia clivorum
© 2013 Gary McDonald
Gilia clivorum
© 2021 Helen Hancock

Grindelia hirsutula    Gumweed,  Hairy gumweed
native
Perennial herb

ASTERACEAE

Grindelia hirsutula
© 2021 R.A. Chasey
Grindelia hirsutula
© 2020 R.A. Chasey
Grindelia hirsutula
© 2015 Ken Lunders

Hazardia squarrosa    Saw toothed goldenbush,  Sawtooth goldenbush
native
Shrub

ASTERACEAE

Hazardia squarrosa
© 2018 Mary Conway
Hazardia squarrosa
© 2019 Bonnie Nickel
Hazardia squarrosa
© 2022 Ron Vanderhoff

Helenium bigelovii    Bigelow's sneezeweed,  Sneezeweed
native
Perennial herb

ASTERACEAE

Helenium bigelovii
© 2022 R.A. Chasey
Helenium bigelovii
© 2019 Bryant Baker
Helenium bigelovii
© 2020 Rebecca Schoenenberger

Hemizonia congesta ssp. luzulifolia    Hayfield tarweed,  Woodrush tarweed
native
Annual herb

ASTERACEAE

Hemizonia congesta ssp. luzulifolia
© 2013 Arcangelo Wessells
Hemizonia congesta ssp. luzulifolia
© 2022 R.A. Chasey
Hemizonia congesta ssp. luzulifolia
© 2022 R.A. Chasey

Heteromeles arbutifolia    Christmas berry,  Toyon
native
Shrub

ROSACEAE

Heteromeles arbutifolia
© 2015 James Gonsman
Heteromeles arbutifolia
© 2017 Gary McDonald
Heteromeles arbutifolia
© 2022 John Doyen

Hieracium albiflorum    White flowered hawkweed,  White hawkweed
native
Perennial herb

ASTERACEAE

Hieracium albiflorum
© 2003 Steve Matson
Hieracium albiflorum
© 2021 Doug Allshouse
Hieracium albiflorum
© 2020 Bob Sweatt

Hieracium argutum    Southern hawkweed
native
Perennial herb

ASTERACEAE

Hieracium argutum
© 2015 Justin Luong
Hieracium argutum
© 2015 Justin Luong
Hieracium argutum
© 2020 David Greenberger

Hirschfeldia incana    Mediterranean hoary mustard,  Short podded mustard,  Summer mustard
invasive non-native
Perennial herb

BRASSICACEAE

Hirschfeldia incana
© 2017 Gary McDonald
Hirschfeldia incana
© 2017 Gary McDonald
Hirschfeldia incana
© 2022 Ron Vanderhoff

Hoita macrostachya    California hemp,  Large leather root
native
Perennial herb

FABACEAE

Hoita macrostachya
© 2020 Ron Vanderhoff
Hoita macrostachya
© 2022 Natalie McNear
Hoita macrostachya
© 2021 Julie King

Hoita orbicularis    Creeping leather root,  Round leaved psoralea,  Roundleaf leather root
native
Perennial herb

FABACEAE

Hoita orbicularis
© 2015 Tim Miller
Hoita orbicularis
© 2018 Hunter Breck
Hoita orbicularis
© 2019 Shane Hanofee

native
Shrub

ROSACEAE

Holodiscus discolor var. discolor
© 2022 R.A. Chasey
Holodiscus discolor var. discolor
© 2021 R.A. Chasey
Holodiscus discolor var. discolor
© 2010 Avis Boutell

Hordeum marinum ssp. gussoneanum    Barley,  Mediterranean barley
non-native
Annual grass

POACEAE

Hordeum marinum ssp. gussoneanum
© 2018 Carolyn
Hordeum marinum ssp. gussoneanum
© 2020 Paul Aigner
Hordeum marinum ssp. gussoneanum
© 2017 Toni Corelli

Hordeum murinum ssp. leporinum    Farmer's foxtail,  Foxtail barley,  Hare barley
non-native
Annual grass

POACEAE

Hordeum murinum ssp. leporinum
© 2022 Ron Vanderhoff
Hordeum murinum ssp. leporinum
© 2021 Al Keuter
Hordeum murinum ssp. leporinum
© 2021 Ron Vanderhoff

Hypochaeris glabra    Smooth cat's ear
invasive non-native
Annual herb

ASTERACEAE

Hypochaeris glabra
© 2020 Ron Vanderhoff
Hypochaeris glabra
© 2017 Gary McDonald
Hypochaeris glabra
© 2019 Ron Vanderhoff

Juglans hindsii    Northern california black walnut
rare native
Tree

JUGLANDACEAE

Juglans hindsii
© 2018 Ron Vanderhoff
Juglans hindsii
© 2016 Steve Matson
Juglans hindsii
© 2018 Ron Vanderhoff

Juncus balticus ssp. ater    Baltic rush
native
Perennial grasslike herb

JUNCACEAE

Juncus balticus ssp. ater
© 2015 Steve Matson
Juncus balticus ssp. ater
© 2015 Steve Matson
Juncus balticus ssp. ater
© 2015 Steve Matson

Juncus bufonius var. congestus    Clustered toad rush
native
Annual grasslike herb

JUNCACEAE

Juncus bufonius var. congestus
© 2004 Steve Matson
Juncus bufonius var. congestus
© 2023 Adonis Tate
Juncus bufonius var. congestus
© 2023 Mary Merriman

Juncus occidentalis    Rush,  Slender juncus,  Western rush
native
Perennial grasslike herb

JUNCACEAE

Juncus occidentalis
© 2021 Toni Corelli
Juncus occidentalis
© 2021 Dick Rawson
Juncus occidentalis
© 2021 Dick Rawson

Juncus patens    Common rush,  Spreading rush
native
Perennial grasslike herb

JUNCACEAE

Juncus patens
© 2022 R.A. Chasey
Juncus patens
© 2022 R.A. Chasey
Juncus patens
© 2018 Emily Allen

Juncus xiphioides    Iris leaved rush,  Irisleaf rush
native
Perennial grasslike herb

JUNCACEAE

Juncus xiphioides
© 2016 Erik Larsen
Juncus xiphioides
© 2017 Ron Vanderhoff
Juncus xiphioides
© 2023 R.A. Chasey

Koeleria macrantha    June grass,  Prairie junegrass
native
Perennial grass

POACEAE

Koeleria macrantha
© 2015 Steve Matson
Koeleria macrantha
© 2015 Steve Matson
Koeleria macrantha
© 2015 Steve Matson

Lactuca serriola    Prickly lettuce,  Prickly wild lettuce
non-native
Annual herb

ASTERACEAE

Lactuca serriola
© 2017 Gary McDonald
Lactuca serriola
© 2017 Gary McDonald
Lactuca serriola
© 2017 Gary McDonald

Lagophylla ramosissima    Branched lagophylla,  Common hareleaf
native
Annual herb

ASTERACEAE

Lagophylla ramosissima
© 2024 Mike Russler
Lagophylla ramosissima
© 2021 Dee Shea Himes
Lagophylla ramosissima
© 2022 Mike Russler

Lathyrus jepsonii var. californicus    California tule pea
native
Perennial herb

FABACEAE

Lathyrus jepsonii var. californicus
© 2020 R.A. Chasey
Lathyrus jepsonii var. californicus
© 2019 Esther Cole
Lathyrus jepsonii var. californicus
© 2020 R.A. Chasey

Lathyrus vestitus var. vestitus    Common pacific pea,  Hillside pea,  Wild sweetpea
native
Perennial herb

FABACEAE

Lathyrus vestitus var. vestitus
© 2023 Steve Conger
Lathyrus vestitus var. vestitus
© 2022 Charles Russell
Lathyrus vestitus var. vestitus
© 2015 Chris Jaster

Layia gaillardioides    Woodland layia,  Woodland tidytips
native
Annual herb

ASTERACEAE

Layia gaillardioides
© 2021 R.A. Chasey
Layia gaillardioides
© 2022 John Rawlings
Layia gaillardioides
© 2019 John Rawlings

Layia platyglossa    Coastal tidytips
native
Annual herb

ASTERACEAE

Layia platyglossa
© 2015 Amy Rapport
Layia platyglossa
© 2019 Jenna T. B. Ekwealor
Layia platyglossa
© 2017 Chris Mo

Lemna minor    Smaller duckweed
native
Perennial herb

ARACEAE

Lemna minor
© 2019 Ron Vanderhoff
Lemna minor
© 2019 Ron Vanderhoff
Lemna minor
© 2022 R.A. Chasey

Lemna minuta    Least duckweed
native
Perennial herb

ARACEAE

Lemna minuta
© 2022 Ron Vanderhoff
Lemna minuta
© 2020 Ron Vanderhoff
Lemna minuta
© 2019 Ron Vanderhoff

Lepechinia calycina    White pitcher sage,  Woodbalm, pitcher sage
native
Shrub

LAMIACEAE

Lepechinia calycina
© 2020 Janice Kuch
Lepechinia calycina
© 2024 Ben Spencer-Cooke
Lepechinia calycina
© 2023 Mike Russler

Lithophragma affine    Common woodland star,  San Francisco woodland star
native
Perennial herb

SAXIFRAGACEAE

Lithophragma affine
© 2018 Steve Matson
Lithophragma affine
© 2018 Steve Matson
Lithophragma affine
© 2018 Steve Matson

Lithophragma heterophyllum    Hill star,  Hillside woodland star
native
Perennial herb

SAXIFRAGACEAE

Lithophragma heterophyllum
© 2019 David Greenberger
Lithophragma heterophyllum
© 2024 Suzanne L. Weakley
Lithophragma heterophyllum
© 2019 Mary Conway

Logfia gallica    Narrowleaf cottonrose
non-native
Annual herb

ASTERACEAE

Logfia gallica
© 2017 Barbara Boethling
Logfia gallica
© 2023 Ron Vanderhoff
Logfia gallica
© 2023 Ron Vanderhoff

Lomatium californicum    California lomatium,  Celery weed
native
Perennial herb

APIACEAE

Lomatium californicum
© 2024 Dana York
Lomatium californicum
© 2022 Richard Sullivan
Lomatium californicum
© 2021 Julie A. Kierstead

Lonicera hispidula    Pink honeysuckle
native
Vine, Shrub

CAPRIFOLIACEAE

Lonicera hispidula
© 2022 Suzanne L. Weakley
Lonicera hispidula
© 2021 Cara Wilcox
Lonicera hispidula
© 2018 Diana Wahl

Lupinus albifrons    Silver bush lupine,  Silver lupine
native
Shrub

FABACEAE

Lupinus albifrons
© 2022 Mike Russler
Lupinus albifrons
© 2022 Steve Conger
Lupinus albifrons
© 2022 Ron Vanderhoff

Lupinus bicolor    Annual lupine,  Bicolored lupine,  Miniature lupine
native
Annual, Perennial herb

FABACEAE

Lupinus bicolor
© 2024 Mary Ann Machi
Lupinus bicolor
© 2022 Mike Russler
Lupinus bicolor
© 2024 Mary Ann Machi

Lupinus formosus var. robustus    Giant western lupine,  Summer lupine
native
Perennial herb

FABACEAE

Lupinus formosus var. robustus
© 2014 Bill Thiessen
Lupinus formosus var. robustus
© 2023 Rachel Miller
Lupinus formosus var. robustus
© 1995 Saint Mary's College of California

Lupinus latifolius var. latifolius    Broad leaf lupine
native
Perennial herb

FABACEAE

Lupinus latifolius var. latifolius
© 2021 John Rawlings
Lupinus latifolius var. latifolius
© 2020 Paul Aigner
Lupinus latifolius var. latifolius
© 2021 Steve Matson

Lupinus succulentus    Arroyo lupine,  Hollowleaf annual lupine,  Succulent lupine
native
Annual herb

FABACEAE

Lupinus succulentus
© 2023 Andy Ford
Lupinus succulentus
© 2018 Stacie Wolny
Lupinus succulentus
© 2018 Stacie Wolny

native
Perennial grasslike herb

JUNCACEAE

Luzula macrantha
© 2023 R.A. Chasey
Luzula macrantha
© 2022 R.A. Chasey
Luzula macrantha
© 2022 R.A. Chasey

Lysimachia latifolia    Pacific starflower
native
Perennial herb

MYRSINACEAE

Lysimachia latifolia
© 2008 Steve Matson
Lysimachia latifolia
© 2016 Steve Matson
Lysimachia latifolia
© 2024 Ben Spencer-Cooke

Madia elegans    Common madia
native
Annual herb

ASTERACEAE

Madia elegans
© 2021 Jamie Spielmann
Madia elegans
© 2021 Mike Russler
Madia elegans
© 2020 Diane Etchison

Madia gracilis    Grassy tarweed,  Gumweed madia,  Slender tarweed
native
Annual herb

ASTERACEAE

Madia gracilis
© 2024 Mike Russler
Madia gracilis
© 2021 Amber Bedgood
Madia gracilis
© 2019 Ron Vanderhoff

Madia sativa    Chile tarweed,  Coast tarweed,  Coastal tarweed
native
Annual herb

ASTERACEAE

Madia sativa
© 2013 Ron Vanderhoff
Madia sativa
© 2021 David Wolfson
Madia sativa
© 2021 Zoya Akulova-Barlow

Mahonia pinnata ssp. pinnata    California barberry,  Coast barberry,  Shiny leaf barberry
native
Shrub

BERBERIDACEAE

Mahonia pinnata ssp. pinnata
© 2022 Alice Cummings
Mahonia pinnata ssp. pinnata
© 2021 Ron Vanderhoff
Mahonia pinnata ssp. pinnata
© 2021 R.A. Chasey

Maianthemum racemosum    Feathery false lily of the valley
native
Perennial herb

RUSCACEAE

Maianthemum racemosum
© 2020 Bob Sweatt
Maianthemum racemosum
© 2018 Steve Matson
Maianthemum racemosum
© 2019 Cynthia Powell

Maianthemum stellatum    Starry false lily of the valley
native
Perennial herb

RUSCACEAE

Maianthemum stellatum
© 2003 Steve Matson
Maianthemum stellatum
© 2003 Steve Matson
Maianthemum stellatum
© 2003 Steve Matson

Malacothrix saxatilis var. commutata    Cliff desertdandelion,  South coast range malacothrix
native
Perennial herb

ASTERACEAE

Malacothrix saxatilis var. commutata
© 2016 George Butterworth
Malacothrix saxatilis var. commutata
© 2016 George Butterworth
Malacothrix saxatilis var. commutata
© 2003 Christopher L. Christie

Marah fabacea    California man-root
native
Perennial herb, Vine

CUCURBITACEAE

Marah fabacea
© 2018 Gary McDonald
Marah fabacea
© 2018 MCOSD EDRR
Marah fabacea
© 2021 Cyril Guyot

Medicago polymorpha    Bur clover,  Bur medic,  California burclover
invasive non-native
Annual herb

FABACEAE

Medicago polymorpha
© 2019 Gary McDonald
Medicago polymorpha
© 2019 Gary McDonald
Medicago polymorpha
© 2019 Gary McDonald

Melica californica    California melicgrass
native
Perennial grass

POACEAE

Melica californica
© 2023 John Rawlings
Melica californica
© 2021 John Rawlings
Melica californica
© 2022 John Rawlings

Melica imperfecta    California melic,  Coast range melic,  Small flowered melica
native
Perennial grass

POACEAE

Melica imperfecta
© 2020 Ron Vanderhoff
Melica imperfecta
© 2021 Ron Vanderhoff
Melica imperfecta
© 2020 Ron Vanderhoff

Melilotus albus    White sweetclover
non-native
Annual, Biennial herb

FABACEAE

Melilotus albus
© 2021 Ron Vanderhoff
Melilotus albus
© 2020 Bob Sweatt
Melilotus albus
© 2022 Ron Vanderhoff

Melilotus indicus    Annual yellow sweetclover,  Sourclover
non-native
Annual herb

FABACEAE

Melilotus indicus
© 2019 Randy Huey
Melilotus indicus
© 2019 Randy Huey
Melilotus indicus
© 2017 Rosalie Benitez

Mentha pulegium    Pennyroyal
invasive non-native
Perennial herb

LAMIACEAE

Mentha pulegium
© 2023 R.A. Chasey
Mentha pulegium
© 2022 R.A. Chasey
Mentha pulegium
© 2015 Chris Jaster

Mentha suaveolens    Apple mint
non-native
Perennial herb

LAMIACEAE

Mentha suaveolens
© 2018 George Butterworth
Mentha suaveolens
© 2021 Ron Vanderhoff
Mentha suaveolens
© 2018 George Butterworth

Micranthes californica    Greene's saxifrage
native
Perennial herb

SAXIFRAGACEAE

Micranthes californica
© 2016 Steve Matson
Micranthes californica
© 2016 Steve Matson
Micranthes californica
© 2016 Steve Matson

Micropus californicus var. californicus    Q tips,  Slender cottonweed
native
Annual herb

ASTERACEAE

Micropus californicus var. californicus
© 2006 Steve Matson
Micropus californicus var. californicus
© 2021 Ron Vanderhoff
Micropus californicus var. californicus
© 2016 Steve Matson

Microsteris gracilis    Slender phlox
native
Annual herb

POLEMONIACEAE

Microsteris gracilis
© 2003 Steve Matson
Microsteris gracilis
© 2016 Steve Matson
Microsteris gracilis
© 2003 Steve Matson

Monardella villosa ssp. obispoensis    San luis obispo coyote mint
native
Perennial herb

LAMIACEAE

Monardella villosa ssp. obispoensis
© 2019 David Wolfson
Monardella villosa ssp. obispoensis
© 2019 David Wolfson
Monardella villosa ssp. obispoensis
© 2020 Dee Shea Himes

Nasturtium officinale    Watercress
native
Perennial herb (aquatic)

BRASSICACEAE

Nasturtium officinale
© 2012 Steve Matson
Nasturtium officinale
© 2012 Steve Matson
Nasturtium officinale
© 2012 Steve Matson

Navarretia mitracarpa    Paso robles navarretia
native
Annual herb

POLEMONIACEAE

Navarretia mitracarpa
© 2022 Mike Russler
Navarretia mitracarpa
© 2019 David Greenberger
Navarretia mitracarpa
© 2022 Mike Russler

Nicotiana acuminata var. multiflora    Many flowered tobacco,  Manyflower tobacco,  Tobacco
non-native
Annual herb

SOLANACEAE

Nicotiana acuminata var. multiflora
© 2023 Mike Russler
Nicotiana acuminata var. multiflora
© 2019 Michelle Karle
Nicotiana acuminata var. multiflora
© 2023 R.A. Chasey

Nicotiana glauca    Tree tobacco
invasive non-native
Tree, Shrub

SOLANACEAE

Nicotiana glauca
© 2019 Jean B Henney
Nicotiana glauca
© 2017 Steve Matson
Nicotiana glauca
© 2017 Steve Matson

Nicotiana quadrivalvis    Indian tobacco
native
Annual herb

SOLANACEAE

Nicotiana quadrivalvis
© 2023 Melissa Harbert
Nicotiana quadrivalvis
© 2019 Michael Mitchell
Nicotiana quadrivalvis
© 2024 Mike Russler

native
Tree, Shrub

FAGACEAE

Notholithocarpus densiflorus var. densiflorus
© 2020 R.A. Chasey
Notholithocarpus densiflorus var. densiflorus
© 2022 David popp
Notholithocarpus densiflorus var. densiflorus
© 2020 Susan McDougall

Oemleria cerasiformis    Indian plum,  Oso berry
native
Shrub

ROSACEAE

Oemleria cerasiformis
© 2019 Margo Bors
Oemleria cerasiformis
© 2019 Stacie Wolny
Oemleria cerasiformis
© 2023 David Wolfson

Osmorhiza berteroi    Sweet cicely
native
Perennial herb

APIACEAE

Osmorhiza berteroi
© 2006 Steve Matson
Osmorhiza berteroi
© 2006 Steve Matson
Osmorhiza berteroi
© 2006 Steve Matson

Osmorhiza brachypoda    California sweet cicely,  California sweetcicely
native
Perennial herb

APIACEAE

Osmorhiza brachypoda
© 2017 Aaron Echols
Osmorhiza brachypoda
© 2020 Ron Vanderhoff
Osmorhiza brachypoda
© 2022 Ron Vanderhoff

Paeonia californica    California peony
native
Perennial herb

PAEONIACEAE

Paeonia californica
© 2024 Ron Vanderhoff
Paeonia californica
© 2023 Ron Vanderhoff
Paeonia californica
© 2019 Susan McDougall

Pectocarya pusilla    Little gruvelia
native
Annual herb

BORAGINACEAE

Pectocarya pusilla
© 2022 Steve Matson
Pectocarya pusilla
© 2022 Steve Matson
Pectocarya pusilla
© 2022 Steve Matson

Pedicularis densiflora ssp. densiflora    Warrior's plume,  Indian warrior
native
Perennial herb

OROBANCHACEAE

Pedicularis densiflora ssp. densiflora
© 2015 Dee Warenycia
Pedicularis densiflora ssp. densiflora
© 2019 Jason Mills
Pedicularis densiflora ssp. densiflora
© 2017 Joshua Borkowski

Pellaea andromedifolia    Coffee cliffbrake,  Coffee fern
native
Fern

PTERIDACEAE

Pellaea andromedifolia
© 2023 Steve Conger
Pellaea andromedifolia
© 2021 Steve Matson
Pellaea andromedifolia
© 2021 Mike Russler

native
Fern

PTERIDACEAE

Pentagramma triangularis ssp. triangularis
© 2008 Steve Matson
Pentagramma triangularis ssp. triangularis
© 2008 Steve Matson
Pentagramma triangularis ssp. triangularis
© 2019 Gary McDonald

Phacelia imbricata ssp. imbricata    Imbricate Phacelia
native
Annual herb

HYDROPHYLLACEAE

Phacelia imbricata ssp. imbricata
© 2019 Steve Matson
Phacelia imbricata ssp. imbricata
© 2019 Steve Matson
Phacelia imbricata ssp. imbricata
© 2019 Steve Matson

Phacelia malvifolia    Stinging phacelia
native
Annual herb

HYDROPHYLLACEAE

Phacelia malvifolia
© 2018 Michael Mitchell
Phacelia malvifolia
© 2022 Jennifer Mo
Phacelia malvifolia
© 2013 Toni Corelli

Phacelia nemoralis ssp. nemoralis    Woods phacelia
native
Perennial herb

HYDROPHYLLACEAE

Phacelia nemoralis ssp. nemoralis
© 2020 Ken Hickman
Phacelia nemoralis ssp. nemoralis
© 2016 Glen Schneider
Phacelia nemoralis ssp. nemoralis
© 2021 Dianne Lake

Phalaris aquatica    Bulbous canarygrass,  Harding grass
invasive non-native
Perennial grass

POACEAE

Phalaris aquatica
© 2024 Michael Chasse
Phalaris aquatica
© 2021 Lenihan Mazur
Phalaris aquatica
© 2024 John Rawlings

Physocarpus capitatus    Ninebark,  Pacific ninebark,  Western ninebark
native
Shrub

ROSACEAE

Physocarpus capitatus
© 2019 Steve Matson
Physocarpus capitatus
© 2019 Steve Matson
Physocarpus capitatus
© 2019 Steve Matson

Pickeringia montana var. montana    Montana chaparral pea
native
Shrub

FABACEAE

Pickeringia montana var. montana
© 2022 Ron Vanderhoff
Pickeringia montana var. montana
© 2022 Ron Vanderhoff
Pickeringia montana var. montana
© 2022 Ron Vanderhoff

Plagiobothrys nothofulvus    Rusty haired popcorn flower,  Rusty popcorn flower,  Rusty popcornflower
native
Annual herb

BORAGINACEAE

Plagiobothrys nothofulvus
© 2011 Steve Matson
Plagiobothrys nothofulvus
© 2011 Steve Matson
Plagiobothrys nothofulvus
© 2015 Steve Matson

Plantago lanceolata    English plantain,  Narrow leaved plantain,  Ribgrass
invasive non-native
Perennial herb

PLANTAGINACEAE

Plantago lanceolata
© 2017 Gary McDonald
Plantago lanceolata
© 2019 Joe Engelbrecht
Plantago lanceolata
© 2021 Ken Lunders

Platanthera michaelii   


Platanus racemosa    California sycamore,  Western sycamore
native
Tree

PLATANACEAE

Platanus racemosa
© 2021 Ron Vanderhoff
Platanus racemosa
© 2018 Ron Vanderhoff
Platanus racemosa
© 2019 Rachelle Gray

Plectritis ciliosa    Long spurred plectritis,  Longspur seablush
native
Annual herb

VALERIANACEAE

Plectritis ciliosa
© 2022 Steve Matson
Plectritis ciliosa
© 2005 Steve Matson
Plectritis ciliosa
© 2022 Steve Matson

Plectritis congesta ssp. brachystemon    Shortspur seablush
native
Annual herb

VALERIANACEAE

Plectritis congesta ssp. brachystemon
© 2023 Catherine Chang
Plectritis congesta ssp. brachystemon
© 2005 Steve Matson
Plectritis congesta ssp. brachystemon
© 2018 Gail Johnson

Pluchea odorata var. odorata    Salt marsh fleabane
native
Annual, Perennial herb

ASTERACEAE

Pluchea odorata var. odorata
© 2011 Keir Morse
Pluchea odorata var. odorata
© 2011 Keir Morse
Pluchea odorata var. odorata
© 2019 Ron Vanderhoff

Poa annua    Annual blue grass,  Annual bluegrass
non-native
Annual grass

POACEAE

Poa annua
© 2021 Ron Vanderhoff
Poa annua
© 2022 John Rawlings
Poa annua
© 2015 Richard Chasey

Poa howellii    Howell's blue grass,  Howell's bluegrass
native
Annual grass

POACEAE

Poa howellii
© 2024 R.A. Chasey
Poa howellii
© 2020 Ken Hickman
Poa howellii
© 2024 R.A. Chasey

Poa secunda var. scabrella    One sided blue grass,  Pine bluegrass,  Sandberg bluegrass
native
Perennial grass

POACEAE

Poa secunda var. scabrella
© 2024 Ryan O'Dell
Poa secunda var. scabrella
© 2019 Paul Aigner
Poa secunda var. scabrella
© 2020 Paul Aigner

Polypodium californicum    California polypody
native
Fern

POLYPODIACEAE

Polypodium californicum
© 2020 Ron Vanderhoff
Polypodium californicum
© 2021 Ron Vanderhoff
Polypodium californicum
© 2023 Keir Morse

Polypodium calirhiza    Acrid fern,  Licorice fern,  Nested polypody
native
Fern

POLYPODIACEAE

Polypodium calirhiza
© 2022 BOB CASE
Polypodium calirhiza
© 2015 James Gonsman
Polypodium calirhiza
© 2020 Susan McDougall

Polypogon interruptus    Ditch beard grass,  Ditch rabbitsfoot grass
non-native
Perennial grass

POACEAE

Polypogon interruptus
© 2022 John Rawlings
Polypogon interruptus
© 2022 John Rawlings
Polypogon interruptus
© 2020 Ron Vanderhoff

Polypogon monspeliensis    Annual beard grass,  Rabbitsfoot grass
invasive non-native
Annual grass

POACEAE

Polypogon monspeliensis
© 2008 Steve Matson
Polypogon monspeliensis
© 2014 Steve Matson
Polypogon monspeliensis
© 2008 Steve Matson

Polypogon viridis    Water beard grass
non-native
Perennial grass

POACEAE

Polypogon viridis
© 2022 Ron Vanderhoff
Polypogon viridis
© 2021 Ron Vanderhoff
Polypogon viridis
© 2019 Friends of Five Creeks volunteers

Polystichum munitum    Western sword fern,  Western swordfern
native
Fern

DRYOPTERIDACEAE

Polystichum munitum
© 2021 Julie A. Kierstead
Polystichum munitum
© 2022 Jerry Murray
Polystichum munitum
© 2011 Toni Corelli

Populus fremontii ssp. fremontii    Fremont cottonwood
native
Tree

SALICACEAE

Populus fremontii ssp. fremontii
© 2019 Stella Yang
Populus fremontii ssp. fremontii
© 2020 David popp
Populus fremontii ssp. fremontii
© 2020 Susan McDougall

Populus trichocarpa    Black cottonwood
native
Tree

SALICACEAE

Populus trichocarpa
© 2019 Ron Vanderhoff
Populus trichocarpa
© 2012 Steve Matson
Populus trichocarpa
© 2012 Steve Matson

native
Perennial herb (aquatic)

POTAMOGETONACEAE

Potamogeton foliosus ssp. foliosus
© 2020 Ron Vanderhoff
Potamogeton foliosus ssp. foliosus
© 2020 Ron Vanderhoff
Potamogeton foliosus ssp. foliosus
© 2020 Ron Vanderhoff

Prosartes hookeri    Drops of gold
native
Perennial herb

LILIACEAE

Prosartes hookeri
© 2021 Norma Solarz
Prosartes hookeri
© 2021 Cara Wilcox
Prosartes hookeri
© 2019 Stacie Wolny

Prunus ilicifolia ssp. ilicifolia    Holly leaf cherry,  Hollyleaf cherry
native
Tree, Shrub

ROSACEAE

Prunus ilicifolia ssp. ilicifolia
© 2023 Helen Hancock
Prunus ilicifolia ssp. ilicifolia
© 2024 Mike Russler
Prunus ilicifolia ssp. ilicifolia
© 2022 Ron Vanderhoff

Prunus virginiana var. demissa    Chokecherry,  Western choke cherry,  Western chokecherry
native
Tree, Shrub

ROSACEAE

Prunus virginiana var. demissa
© 2005 Steve Matson
Prunus virginiana var. demissa
© 2005 Steve Matson
Prunus virginiana var. demissa
© 2020 Susan McDougall

native
Perennial herb

ASTERACEAE

Pseudognaphalium beneolens
© 2021 BLM Redding Field Office
Pseudognaphalium beneolens
© 2021 Mike Russler
Pseudognaphalium beneolens
© 2021 R.A. Chasey

Pseudognaphalium californicum    Ladies' tobacco
native
Annual, Perennial herb

ASTERACEAE

Pseudognaphalium californicum
© 2019 Gary McDonald
Pseudognaphalium californicum
© 2020 Steven M Norris
Pseudognaphalium californicum
© 2021 Ron Vanderhoff

Pteridium aquilinum var. pubescens    Hairy brackenfern,  Western bracken fern
native
Fern

DENNSTAEDTIACEAE

Pteridium aquilinum var. pubescens
© 2019 Ron Vanderhoff
Pteridium aquilinum var. pubescens
© 2019 Ron Vanderhoff
Pteridium aquilinum var. pubescens
© 2022 Bob Sweatt

Quercus agrifolia var. agrifolia    California live oak,  Coast live oak
native
Tree

FAGACEAE

Quercus agrifolia var. agrifolia
© 2023 Ron Vanderhoff
Quercus agrifolia var. agrifolia
© 2022 Ron Vanderhoff
Quercus agrifolia var. agrifolia
© 2021 Al Keuter

Quercus berberidifolia    Inland scrub oak
native
Tree

FAGACEAE

Quercus berberidifolia
© 2022 David Strauch
Quercus berberidifolia
© 2022 Ron Vanderhoff
Quercus berberidifolia
© 2022 David Strauch

Quercus lobata    California white oak,  Valley oak
native
Tree

FAGACEAE

Quercus lobata
© 2023 Helen Hancock
Quercus lobata
© 2021 Cynthia Powell
Quercus lobata
© 2023 Suzanne L. Weakley

Rafinesquia californica    California chicory,  California plumseed
native
Annual herb

ASTERACEAE

Rafinesquia californica
© 2023 Robert Steers
Rafinesquia californica
© 2021 Ron Vanderhoff
Rafinesquia californica
© 2017 Steve Matson

native
Perennial herb

RANUNCULACEAE

Ranunculus californicus var. californicus
© 2016 Steve Matson
Ranunculus californicus var. californicus
© 2016 Steve Matson
Ranunculus californicus var. californicus
© 2016 Steve Matson

Ranunculus hebecarpus    Delicate buttercup,  Pubescent fruited buttercup,  Slender annual buttercup
native
Annual herb

RANUNCULACEAE

Ranunculus hebecarpus
© 2019 Ron Vanderhoff
Ranunculus hebecarpus
© 2021 Ron Vanderhoff
Ranunculus hebecarpus
© 2019 Ron Vanderhoff

Rhamnus ilicifolia    Evergreen buckthorn,  Hollyleaf redberry
native
Shrub

RHAMNACEAE

Rhamnus ilicifolia
© 2016 Steve Matson
Rhamnus ilicifolia
© 2016 Steve Matson
Rhamnus ilicifolia
© 2006 Steve Matson

Ribes californicum var. californicum    California gooseberry,  Hillside gooseberry
native
Shrub

GROSSULARIACEAE

Ribes californicum var. californicum
© 2019 Matt Berger
Ribes californicum var. californicum
© 2018 Gary McDonald
Ribes californicum var. californicum
© 2019 Adam Chasey

Ribes divaricatum var. pubiflorum    Spreading gooseberry,  Straggly gooseberry
native
Shrub

GROSSULARIACEAE

Ribes divaricatum var. pubiflorum
© 2021 Ken-ichi Ueda
Ribes divaricatum var. pubiflorum
© 2021 Ken-ichi Ueda
Ribes divaricatum var. pubiflorum
© 2021 Ken-ichi Ueda

Ribes sanguineum var. glutinosum    Blood currant,  Flowering currant,  Pink flowering currant
native
Shrub

GROSSULARIACEAE

Ribes sanguineum var. glutinosum
© 2023 Dana York
Ribes sanguineum var. glutinosum
© 2018 John Rusk
Ribes sanguineum var. glutinosum
© 2018 Hunter Breck

Ribes sericeum    Santa lucia gooseberry
rare native
Shrub

GROSSULARIACEAE

Ribes sericeum
© 2024 Keir Morse
Ribes sericeum
© 2024 Keir Morse
Ribes sericeum
© 2024 Keir Morse

Ribes speciosum    Fuchsia flowered gooseberry,  Fuchsiaflower gooseberry
native
Shrub

GROSSULARIACEAE

Ribes speciosum
© 2022 David Chipping
Ribes speciosum
© 2024 Shelly Marshall
Ribes speciosum
© 2021 Ron Vanderhoff

Rosa californica    California wild rose,  California wildrose
native
Shrub

ROSACEAE

Rosa californica
© 2022 Suzanne L. Weakley
Rosa californica
© 2022 Suzanne L. Weakley
Rosa californica
© 2021 Sue Graue

native
Shrub

ROSACEAE

Rosa gymnocarpa var. gymnocarpa
© 2017 Steve Matson
Rosa gymnocarpa var. gymnocarpa
© 2020 David Krause
Rosa gymnocarpa var. gymnocarpa
© 2017 Steve Matson

Rubus ursinus    California blackberry,  Pacific blackberry
native
Vine, Shrub

ROSACEAE

Rubus ursinus
© 2018 Ken Lunders
Rubus ursinus
© 2019 Ron Vanderhoff
Rubus ursinus
© 2015 Kelli Kallenborn

Rumex conglomeratus    Clustered dock,  Green dock
non-native
Perennial herb

POLYGONACEAE

Rumex conglomeratus
© 2020 Ron Vanderhoff
Rumex conglomeratus
© 2023 Ron Vanderhoff
Rumex conglomeratus
© 2023 Ron Vanderhoff

Rumex crispus    Curly dock,  Curly leaved dock,  Rhubarb
invasive non-native
Perennial herb

POLYGONACEAE

Rumex crispus
© 2018 Tim Lewis
Rumex crispus
© 2019 Diane Etchison
Rumex crispus
© 2023 Ron Vanderhoff

Rumex kerneri    Kerner's dock
non-native
Perennial herb

POLYGONACEAE

Rumex kerneri
© 2024 Donald Burk
Rumex kerneri
© 2023 Donald Burk
Rumex kerneri
© 2024 Donald Burk

Rumex salicifolius var. salicifolius    Willow dock,  Willow leaved dock
native
Perennial herb

POLYGONACEAE

Rumex salicifolius var. salicifolius
© 2023 Ron Vanderhoff
Rumex salicifolius var. salicifolius
© 2023 Ron Vanderhoff
Rumex salicifolius var. salicifolius
© 2023 Helen Hancock

Salix lasiandra var. lasiandra    Pacific willow
native
Tree

SALICACEAE

Salix lasiandra var. lasiandra
© 2021 Alice Cummings
Salix lasiandra var. lasiandra
© 2021 Diane Renshaw
Salix lasiandra var. lasiandra
© 2021 Ken Hickman

Salix lasiolepis    Arroyo willow
native
Tree, Shrub

SALICACEAE

Salix lasiolepis
© 2022 Ron Vanderhoff
Salix lasiolepis
© 2022 Ron Vanderhoff
Salix lasiolepis
© 2020 Steve Matson

Salvia mellifera    Black sage
native
Shrub

LAMIACEAE

Salvia mellifera
© 2017 Steve Matson
Salvia mellifera
© 2022 Suzanne L. Weakley
Salvia mellifera
© 2019 Diane Etchison

Salvia spathacea    Hummingbird sage
native
Perennial herb

LAMIACEAE

Salvia spathacea
© 2020 David Wolfson
Salvia spathacea
© 2020 Abby Nichols
Salvia spathacea
© 2020 Bryant Baker

Sambucus mexicana ssp. mexicana    Blue elderberry
native
Tree, Shrub

VIBURNACEAE

Sambucus mexicana ssp. mexicana
© 2021 Mike Russler
Sambucus mexicana ssp. mexicana
© 2020 Diane Etchison
Sambucus mexicana ssp. mexicana
© 2022 El Byrne

Sanicula bipinnata    Poison sanicle
native
Perennial herb

APIACEAE

Sanicula bipinnata
© 2008 Steve Matson
Sanicula bipinnata
© 2008 Steve Matson
Sanicula bipinnata
© 2022 R.A. Chasey

Sanicula crassicaulis    Gamble weed,  Pacific blacksnakeroot,  Pacific sanicle
native
Perennial herb

APIACEAE

Sanicula crassicaulis
© 2023 Steve Conger
Sanicula crassicaulis
© 2023 Steve Conger
Sanicula crassicaulis
© 2021 Steve Laymon

native
Perennial grasslike herb

CYPERACEAE

Schoenoplectus pungens var. longispicatus
© 2008 Steve Matson
Schoenoplectus pungens var. longispicatus
© 2008 Steve Matson
Schoenoplectus pungens var. longispicatus
© 2022 R.A. Chasey

Scirpus microcarpus    Panicled bulrush,  Small fruited bulrush
native
Perennial grasslike herb

CYPERACEAE

Scirpus microcarpus
© 2022 Doug Allshouse
Scirpus microcarpus
© 2008 Steve Matson
Scirpus microcarpus
© 2013 Ron Vanderhoff

Scrophularia californica ssp. californica    California bee plant,  California figwort
native
Perennial herb

SCROPHULARIACEAE

Scrophularia californica ssp. californica
© 2020 Bob Sweatt
Scrophularia californica ssp. californica
© 2006 Steve Matson
Scrophularia californica ssp. californica
© 2019 Cynthia Powell

Scrophularia californica ssp. floribunda    California bee plant,  California figwort
native
Perennial herb

SCROPHULARIACEAE

Scrophularia californica ssp. floribunda
© 2020 Bob Sweatt
Scrophularia californica ssp. floribunda
© 2006 Steve Matson
Scrophularia californica ssp. floribunda
© 2019 Cynthia Powell

Senecio aronicoides    California butterweed,  California groundsel,  California rayless butterweed
native
Perennial herb

ASTERACEAE

Senecio aronicoides
© 2020 Helen Hancock
Senecio aronicoides
© 2008 Steve Matson
Senecio aronicoides
© 2020 Julie A. Kierstead

Silene laciniata ssp. laciniata    Cardinal catchfly
native
Perennial herb

CARYOPHYLLACEAE

Silene laciniata ssp. laciniata
© 2020 David Greenberger
Silene laciniata ssp. laciniata
© 2023 Ron Vanderhoff
Silene laciniata ssp. laciniata
© 2023 Ron Vanderhoff

Silybum marianum    Blessed milkthistle,  Milk thistle
invasive non-native
Annual, Perennial herb

ASTERACEAE

Silybum marianum
© 2020 Nancy Hamlett
Silybum marianum
© 2019 Marisa Persaud
Silybum marianum
© 2018 Angelique Herman

Solanum umbelliferum var. xanti    Blue witch nightshade,  Bluewitch nightshade
native
Shrub

SOLANACEAE

Solanum umbelliferum var. xanti
© 2014 Steve Matson
Solanum umbelliferum var. xanti
© 2014 Steve Matson
Solanum umbelliferum var. xanti
© 2014 Steve Matson

Solidago elongata    West coast canada goldenrod
native
Perennial herb

ASTERACEAE

Solidago elongata
© 2003 Steve Matson
Solidago elongata
© 2021 Mike Russler
Solidago elongata
© 2022 Steve Matson

Solidago velutina ssp. californica    California goldenrod,  Oreja de liebre
native
Perennial herb

ASTERACEAE

Solidago velutina ssp. californica
© 2013 Steve Matson
Solidago velutina ssp. californica
© 2008 Steve Matson
Solidago velutina ssp. californica
© 2008 Steve Matson

Sonchus asper ssp. asper    Prickly sow thistle,  Sow thistle
non-native
Annual herb

ASTERACEAE

Sonchus asper ssp. asper
© 2014 Gary McDonald
Sonchus asper ssp. asper
© 2022 Ron Vanderhoff
Sonchus asper ssp. asper
© 2014 Gary McDonald

Sonchus oleraceus    Common sow thistle,  Common sowthistle,  Sow thistle
non-native
Annual herb

ASTERACEAE

Sonchus oleraceus
© 2019 Diane Etchison
Sonchus oleraceus
© 2015 Jesse Rorabaugh
Sonchus oleraceus
© 2024 Ron Vanderhoff

Stachys bullata    California hedge nettle,  California hedgenettle,  Southern hedge nettle
native
Perennial herb

LAMIACEAE

Stachys bullata
© 2014 Steve Matson
Stachys bullata
© 2014 Steve Matson
Stachys bullata
© 2014 Steve Matson

Stachys pycnantha ssp. pycnantha    Short spike hedge nettle,  Shortspike hedgenettle
native
Perennial herb

LAMIACEAE

Stachys pycnantha ssp. pycnantha
© 2023 David Wolfson
Stachys pycnantha ssp. pycnantha
© 2019 David Wolfson
Stachys pycnantha ssp. pycnantha
© 2021 Dan Quinn

Stellaria media    Chickweed
non-native
Annual herb

CARYOPHYLLACEAE

Stellaria media
© 2018 Gary McDonald
Stellaria media
© 2018 Gary McDonald
Stellaria media
© 2015 Diane Etchison

Stellaria nitens    Shining chickweed,  Shiny chickweed,  Smooth chickweed
native
Annual herb

CARYOPHYLLACEAE

Stellaria nitens
© 2024 Dana York
Stellaria nitens
© 2022 Catherine Chang
Stellaria nitens
© 2020 Ken Hickman

Stephanomeria cichoriacea    Chicory leaved stephanomeria,  Chicoryleaf wirelettuce,  Fort tejon milk aster
native
Perennial herb

ASTERACEAE

Stephanomeria cichoriacea
© 2019 David Greenberger
Stephanomeria cichoriacea
© 2012 Ron Vanderhoff
Stephanomeria cichoriacea
© 2018 John Game

Symphoricarpos albus var. laevigatus    Common snowberry,  Upright snowberry
native
Shrub

CAPRIFOLIACEAE

Symphoricarpos albus var. laevigatus
© 2020 Jacob Smith
Symphoricarpos albus var. laevigatus
© 2020 Jacob Smith
Symphoricarpos albus var. laevigatus
© 2021 Mike Russler

Symphyotrichum chilense    California aster,  Pacific aster
native
Perennial herb

ASTERACEAE

Symphyotrichum chilense
© 2020 Suzanne L. Weakley
Symphyotrichum chilense
© 2013 Arcangelo Wessells
Symphyotrichum chilense
© 2018 Stacie Wolny

Taraxacum officinale    Common dandelion,  Dandelion,  Red seeded dandelion
non-native
Perennial herb

ASTERACEAE

Taraxacum officinale
© 2021 Ron Vanderhoff
Taraxacum officinale
© 2019 Diane Etchison
Taraxacum officinale
© 2021 Ron Vanderhoff

Tauschia hartwegii    Hartweg's tauschia,  Hartweg's umbrellawort,  Tauschia
native
Perennial herb

APIACEAE

Tauschia hartwegii
© 2006 Steve Matson
Tauschia hartwegii
© 2006 Steve Matson
Tauschia hartwegii
© 2006 Steve Matson

Thalictrum fendleri var. polycarpum    Fendler's meadow rue,  Meadow rue,  Torrey's meadow rue
native
Perennial herb

RANUNCULACEAE

Thalictrum fendleri var. polycarpum
© 2017 Thomas Reyes
Thalictrum fendleri var. polycarpum
© 2019 Patrick Furtado
Thalictrum fendleri var. polycarpum
© 2020 Diane Etchison

native
Annual herb

BRASSICACEAE

Thysanocarpus curvipes ssp. curvipes
© 2016 Steve Matson
Thysanocarpus curvipes ssp. curvipes
© 2016 Steve Matson
Thysanocarpus curvipes ssp. curvipes
© 2016 Steve Matson

Thysanocarpus laciniatus    Common lace pod,  Mountain fringepod,  Narrow leaved fringe pod
native
Annual herb

BRASSICACEAE

Thysanocarpus laciniatus
© 2021 Helen Hancock
Thysanocarpus laciniatus
© 2021 R.A. Chasey
Thysanocarpus laciniatus
© 2021 Helen Hancock

Torilis arvensis    Field hedge parsley,  Spreading hedgeparsley,  Tall Sock-Destroyer
invasive non-native
Annual herb

APIACEAE

Torilis arvensis
© 2019 Ron Vanderhoff
Torilis arvensis
© 2017 Gary McDonald
Torilis arvensis
© 2018 Lindsey Hack

Torilis nodosa    Hedge parsley,  Knotted hedge parsley,  Knotted hedgeparsley
non-native
Annual herb

APIACEAE

Torilis nodosa
© 2011 Steve Matson
Torilis nodosa
© 2011 Steve Matson
Torilis nodosa
© 2011 Steve Matson

Toxicodendron diversilobum    Poison oak,  Poisonoak,  Western Poison Oak
native
Vine, Shrub

ANACARDIACEAE

Toxicodendron diversilobum
© 2020 Ron Vanderhoff
Toxicodendron diversilobum
© 2019 Randy Huey
Toxicodendron diversilobum
© 2021 Bryant Baker

Tragopogon porrifolius    Purple salsify
non-native
Perennial herb

ASTERACEAE

Tragopogon porrifolius
© 2019 Julie dinsdale
Tragopogon porrifolius
© 2015 David Wolfson
Tragopogon porrifolius
© 2020 Martin Cooper

Trifolium bifidum var. decipiens    Notch leaf clover
native
Annual herb

FABACEAE

Trifolium bifidum var. decipiens
© 2022 R.A. Chasey
Trifolium bifidum var. decipiens
© 2022 R.A. Chasey
Trifolium bifidum var. decipiens
© 2021 Cameron Chabre

Trifolium ciliolatum    Foothill clover,  Tree clover
native
Annual herb

FABACEAE

Trifolium ciliolatum
© 2005 Steve Matson
Trifolium ciliolatum
© 2005 Steve Matson
Trifolium ciliolatum
© 2005 Steve Matson

Trifolium fucatum    Bull clover,  Sour clover
native
Annual herb

FABACEAE

Trifolium fucatum
© 2014 Steve Matson
Trifolium fucatum
© 2014 Steve Matson
Trifolium fucatum
© 2020 Paul Aigner

Trifolium microcephalum    Hairy clover,  Small headed clover
native
Annual herb

FABACEAE

Trifolium microcephalum
© 2005 Steve Matson
Trifolium microcephalum
© 2016 Michael Mitchell
Trifolium microcephalum
© 2019 Ron Vanderhoff

Trifolium microdon    Thimble clover,  Valparaiso clover
native
Annual herb

FABACEAE

Trifolium microdon
© 2022 Dee Shea Himes
Trifolium microdon
© 2022 Dee Shea Himes
Trifolium microdon
© 2023 R.A. Chasey

Trifolium willdenovii    Tomcat clover
native
Annual herb

FABACEAE

Trifolium willdenovii
© 2024 Steve Conger
Trifolium willdenovii
© 2024 Steve Conger
Trifolium willdenovii
© 2018 Stacie Wolny

Trillium angustipetalum    Narrow petaled wakerobin,  Narrowpetal wakerobin
native
Perennial herb

MELANTHIACEAE

Trillium angustipetalum
© 2019 Kolby Lundgren
Trillium angustipetalum
© 2015 Nathan Feldman
Trillium angustipetalum
© 2020 Susan McDougall

Trisetum canescens    Nodding oatgrass,  Nodding trisetum,  Tall trisetum
native
Perennial grass

POACEAE

Trisetum canescens
© 2020 John Rawlings
Trisetum canescens
© 2011 Steve Matson
Trisetum canescens
© 2022 Ellen Uhler

Turritis glabra    Tower rockcress
native
Perennial herb

BRASSICACEAE

Turritis glabra
© 2017 Steve Matson
Turritis glabra
© 2017 Steve Matson
Turritis glabra
© 2017 Steve Matson

Typha domingensis    Narrowleaf cattail,  Southern cattail
native
Perennial herb

TYPHACEAE

Typha domingensis
© 2020 Ron Vanderhoff
Typha domingensis
© 2020 Ron Vanderhoff
Typha domingensis
© 2023 Ron Vanderhoff

Umbellularia californica    Bay laurel,  California bay,  California laurel, bay tree
native
Tree

LAURACEAE

Umbellularia californica
© 2023 Mary Ann Machi
Umbellularia californica
© 2016 Steve Matson
Umbellularia californica
© 2023 Mary Ann Machi

Verbascum thapsus    Common mullein,  Woolly mullein
invasive non-native
Perennial herb

SCROPHULARIACEAE

Verbascum thapsus
© 2021 R.A. Chasey
Verbascum thapsus
© 2020 Kim Cabrera
Verbascum thapsus
© 2016 Cynthia Powell

Verbascum virgatum    Wand mullein
non-native
Perennial herb

SCROPHULARIACEAE

Verbascum virgatum
© 2019 Jerry Thornton
Verbascum virgatum
© 2022 Amber Bedgood
Verbascum virgatum
© 2021 Mike Russler

Verbena lasiostachys var. lasiostachys    Vervain,  Western vervain
native
Perennial herb

VERBENACEAE

Verbena lasiostachys var. lasiostachys
© 2010 Steve Matson
Verbena lasiostachys var. lasiostachys
© 2010 Steve Matson
Verbena lasiostachys var. lasiostachys
© 2010 Steve Matson

Veronica anagallis-aquatica    Water speedwell
non-native
Perennial herb

PLANTAGINACEAE

Veronica anagallis-aquatica
© 2015 Steve Matson
Veronica anagallis-aquatica
© 2015 Steve Matson
Veronica anagallis-aquatica
© 2015 Steve Matson

Vicia americana ssp. americana    American vetch
native
Perennial herb, Vine

FABACEAE

Vicia americana ssp. americana
© 2008 Steve Matson
Vicia americana ssp. americana
© 2008 Steve Matson
Vicia americana ssp. americana
© 2008 Steve Matson

Vicia hassei    Hasse's vetch
native
Vine

FABACEAE

Vicia hassei
© 2023 R.A. Chasey
Vicia hassei
© 2016 Phil Johnson
Vicia hassei
© 2023 R.A. Chasey

Vicia sativa ssp. sativa    Garden vetch,  Pubescent common vetch,  Spring vetch
non-native
Annual herb, Vine

FABACEAE

Vicia sativa ssp. sativa
© 2007 Toni Corelli
Vicia sativa ssp. sativa
© 2020 Ron Vanderhoff
Vicia sativa ssp. sativa
© 2020 Ron Vanderhoff

Wyethia glabra    Coast range mule ears,  Shining mule ears,  Smooth mule ears
native
Perennial herb

ASTERACEAE

Wyethia glabra
© 2020 Julie A. Kierstead
Wyethia glabra
© 2022 R.A. Chasey
Wyethia glabra
© 2019 Colleen Herr